Fixed Cash ISA Account

Fixed Cash ISA - Your Path to Tax-Free Savings

Looking for a secure, tax-free way to grow your money? Our Fixed Cash ISA provides a guaranteed return of 4% AER for the 2025/26 tax year, making it the ideal choice for maximising your savings.

What is a Fixed Cash ISA?

A Fixed Cash ISA is a smart and straightforward way to save money while enjoying tax-free benefits. With this type of account, you secure a fixed interest rate for a set period. This makes it an excellent choice if you want steady, predictable growth for your savings.

Any interest you earn stays completely tax-free. This means more of your money works for you, helping you reach your financial goals faster. Plus, the fixed interest rate gives you peace of mind, as you’ll know exactly how much your savings will grow over time.

Why Choose a Fixed Cash ISA?

Saving money is essential for a secure financial future, and choosing the right account is key. If you’re looking for stability and tax-free returns, Fixed Cash ISAs can be a great option. They offer a secure way to grow your savings over time while benefiting from unique tax advantages, making them an ideal choice for long-term savers.

Tax-Free Savings

Fixed Cash ISAs offer the benefit of tax-free interest, allowing you to make the most of your savings without worrying about deductions. This makes them an ideal choice for anyone looking to maximise their returns in a simple and effective way.

Fixed Rates for Certainty

With a Fixed Cash ISA, you’ll enjoy a guaranteed interest rate for the term of the account. This ensures that your savings grow reliably and eliminates any uncertainty about potential changes in rates.

Encourages Long-Term Saving

Opting for a Fixed Cash ISA often involves committing your funds for a fixed period, fostering healthier saving habits while creating an opportunity for steady financial growth.

Perfect for Your Saving Goals

Whether your aim is to save for a special purchase, future expenses, or to build a secure financial cushion, a Fixed Cash ISA provides a secure and dependable pathway to help you reach your ambitions confidently.

Choosing a Fixed Cash ISA means combining the benefits of tax-free savings with the reassurance of a fixed rate, offering a practical and effective way to grow your savings.

Summary Box for the Fixed Cash ISA

Here’s a quick rundown of the key points about our Fixed Cash ISA, so you have everything you need to know before applying.

Account name

Fixed Cash ISA 2025/26

What is the interest rate?

4.00% tax-free/AER

Can Serve and Protect change the interest rate?

No, the interest rate is fixed for the 2025/26 tax year.

What would the estimated balance be at the end of the tax year, based on a £10,000 deposit?

If you added £10,000 to your Fixed Cash ISA on 6th April 2025 and made no
withdrawals, then at 5th April 2026 your balance would be £10,400.

How do I open and manage my account?

To open an account, you must:

Be aged 18 or over
You must be a member of Serve and Protect
A UK tax resident or work as a Crown employee serving overseas and paid out of the public revenue of the UK — typically a serving member of the armed forces or a diplomat, if they are not resident in the UK
Or be married to, or in a civil partnership with, an eligible person

You can open an account:

Online by completing an application here
You must deposit at least £5 to open your Fixed Cash ISA

How much can I deposit?

The minimum deposit is £5. You can save up to £20,000 within the annual ISA allowance. Additional contributions must adhere to ISA regulations.

How do I pay into this account?

If you’re using your annual ISA allowance

You can pay your initial deposit(s) into this account by transfer from another account held with us or another provider.

If you’re transferring an existing cash ISA you have (with us or elsewhere) to this account

You can do this by providing us with a completed Cash ISA Transfer Authority Form. You’ll receive the form shortly after completing our application form. Return it to us and we’ll arrange the transfer on your behalf.

You must not withdraw the funds yourself to transfer to this account, as they will lose their tax-free status.

How do I manage this account and get in contact?

You can manage your account through online banking, through our mobile app, and over the phone

Can I withdraw money?

Yes – however, any withdrawals will automatically close your Fixed Cash ISA. You can take money out and close your Fixed Cash ISA whenever you wish, with no notice, although our standard 60-day interest penalty will apply for withdrawals made before the agreed subscription term.

Additional information

You might need to pay tax on the interest or dividend you receive from your savings accounts with us. This will depend on your personal financial situation. You can find more information here.

Interest will be paid into your account and you are responsible for
declaring any relevant amount of interest to the relevant authorities.

Those members residing overseas will be included in the Automatic
Exchange of Information return as required by HMRC, which discloses
interest payments made.

You may transfer your money to another available Serve and Protect Credit Union account or withdraw it to another account.

Are you ready to open our Fixed Cash ISA? Click here to get started.

Ready to Apply for our 2025/26 ISA?

If you’re already a member, our Fixed Cash ISA account for the 2025/26 tax year is just the thing for you. Just fill out the form below to get started.

Step 1 of 6 - Getting Started

Are you a member of Serve and Protect Credit Union?(Required)

To open a Cash ISA, you must be member of Serve and Protect Credit Union. Not already a member? Don't worry, it's quick and easy to join. Get started now! Once you've joined, head back here to complete your application for a Cash ISA.

Address(Required)

Your Savings Are Safe

Feel secure knowing your savings are protected. With Serve and Protect, your funds are covered up to £85,000 by the Financial Services Compensation Scheme (FSCS). This means you can save with us confidently, knowing your money is in safe hands.

Learn More About FSCS Protection

Helping You Understand Savings Terms

We know financial jargon can be confusing, so we’ve simplified some of the key terms you might come across:

AER (Annual Equivalent Rate)

Interest earnings if compounded annually.

Fixed Interest

Fixed interest is a rate of return on savings or investments that remains constant throughout a set period, regardless of market fluctuations. It provides stability and allows for easier financial planning.

Interest Rate

The interest rate is the percentage paid for keeping money in your savings account, helping your balance grow over time.

Maturity

Maturity marks the end of your account’s term. At this point, you can withdraw, reinvest, or explore other options.

Tax Free

Interest earned exempt from taxes, often applicable to ISAs.

Tax Year

The tax year is the 12-month period used by the government for calculating an individual’s tax liabilities. In the UK, the tax year runs from 6 April of one year to 5 April of the following year.

Confused by financial jargon? Visit our Jargon Buster for more helpful explanations.

Fixed Cash ISA Rates

Below, you’ll find an archive of the Fixed Cash ISA rates we’ve paid, allowing you to easily track what was provided and when.

Tax year	Effective period	AER (Annual Equavalent Rate)
2025/2026	06.04.2025 - 05.04.2026	4.00%
2024/2025	06.04.2024 - 05.04.2025	4.00%

Standard ISA Rate – Our Standard ISA rate is currently 1%. This is the rate you will receive on any Cash ISAs held with us from previous tax years.

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